The number 77318
77318 is a composite number with 8 divisors. Its prime factorisation is 2 × 67 × 577. Divisors (8): 1, 2, 67, 134, 577, 1154, 38659, 77318.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
77318 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
77318 is composite. Its prime factorisation is
- 3
The divisors add up to 117912; without 77318 itself that is 40594, so 77318 is deficient (40594 is less than 77318). Euler's totient φ(77318) = 38016 numbers up to 77318 share no factor with it.
- 4
The digits of 77318 add up to 26, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 138 steps to reach 1.
LaTeX source of the formulas on this page
\[ 77318 = 2 \times 67 \times 577 \]
77318 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 117912 |
| Euler totient φ(n) | 38016 |
| Square | 5978073124 |
| Cube | 462212657801432 |
| Square root | 278.061144 |
| Digit sum / digital root | 26 / 8 |
| Collatz steps to 1 | 138 |
| Scientific notation | 7.7318 × |
77318 in other forms
| Form | Value |
|---|---|
| In words | seventy-seven thousand three hundred and eighteen |
| Binary (base 2) | 10010111000000110 |
| Octal (base 8) | 227006 |
| Hexadecimal (base 16) | 12E06 |
| Base 3 | 10221001122 |
| As time | 77318 seconds = 21 h 28 min 38 s |
Is 77318 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (77318 ÷ 2 = 38659) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 2) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 3) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 10) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 2) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 77318 a prime number?
No. 77318 = 2 × 67 × 577, so it is divisible by 2.
What are the factors of 77318?
1, 2, 67, 134, 577, 1154, 38659, 77318.
What is 77318 in binary?
10010111000000110 (hexadecimal 12E06, octal 227006).
What is the square root of 77318?
About 278.0611.
Is 77318 divisible by 3?
No. Its digits add up to 26, which is not a multiple of 3.
What is special about the number 77318?
It is a composite number with 8 divisors.